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密碼學是關于在存在對手的情況下進行通信的。

貧賤是苦難的境界，能很好地居于其境者就苦中有樂；富貴是快樂的境地，不能很好地對待富貴的人便會樂極生悲。

The Vietnamese people deeply love independence, freedom, and peace. But in the face of a threat to their country's independence, the Vietnamese people would rather sacrifice everything than lose their country and be enslaved.

Sustainability isn't a choice anymore—it's the only way forward for responsible businesses.

建筑應該訴說它的時代和地點，但渴望永恒。

君子不用水來當鏡子，而是拿別人來當鏡子。用水當鏡子可以看到的是容貌，用人當鏡子則可以知道吉兇對錯。